diff --git a/4.2.1-User-Scripts.md b/4.2.1-User-Scripts.md
index 7ad3104..de2c8d1 100644
--- a/4.2.1-User-Scripts.md
+++ b/4.2.1-User-Scripts.md
@@ -1,7 +1,9 @@
 
-We recommend [Violentmonkey](https://addons.mozilla.org/firefox/addon/violentmonkey/) to run these
+We recommend [Violentmonkey](https://addons.mozilla.org/firefox/addon/violentmonkey/) or similar to run these
 
-:exclamation: These scripts do NOT work in Greasemonkey due to `@run-at document-start`. They do work in the `legacy extension`
+:exclamation: All three scripts work with `legacy extensions`. They require `@run-at document-start` and may not work due to limitations in the `web extensions` API: currently (April 20, 2018)
+   * Violentmonkey: all but conceal window.opener work
+   * Greasemonkey : none work
 
 If you would like to submit any scripts to be added to this list, please post a [new issue](https://github.com/ghacksuserjs/ghacks-user.js/issues/new) for consideration, thanks. Please stick to scripts that deal with increasing security/privacy, and reducing tracking/fingerprinting.